Jurassic Boy 2

From Sonic Retro

Revision as of 13:02, 23 July 2023 by BSonirachi (talk | contribs) (Text replacement - "Category:Unlicensed games" to "{{Unlicensed}}")


  • Famicom
  • Game Boy Color
JurassicBoy2 GBC Title.png
Jurassic Boy 2
System(s): Famicom, Game Boy Color
Publisher: Thin Chen Enterprise (Sachen)
Genre: Action
Number of players: 1
Release Date RRP Code Rating
1994 NT$? ?
Nintendo Game Boy Color
199x NT$? ?

Jurassic Boy 2, also known simply as Jurassic Boy and Jurassic Boy II is an unlicensed Famicom game released by Sachen in 1994. It was later ported to the Game Boy Color.

The player controls a pink dinosaur named Chen who stops a mad scientist, Dr. Crachi, from kidnapping his family and obtaining a "gene" that is needed in the future to make complete dinosaurs. The gameplay and level design is very obviously based on Sonic the Hedgehog. Despite its name, no "Jurassic Boy 1" was ever produced.


In the year 2193, "Dinosaurs" become a popular subject again. Scientists all work to try and revive the dinosaurs.

Nevertheless, they still lack a special gene. This causes all the dinosaurs they cultivate to be incomplete.

Many countries then intend to buy dinosaurian fossils at high prices in order to get the gene. But it seems that it's not so easy.

No one can do anything to resolve this problem until Dr. Crachi invents a "Time Space" machine in the year 2197.


Jurassic Boy 2 is an attempt to bring Sonic the Hedgehog-style gameplay to Nintendo's 8-bit Famicom console, however the main character, Chen, cannot roll along the ground like Sonic. There are seven levels.

When brought to the Game Boy Color, the physics were altered, allowing Chen to jump higher and move faster across the screen. This version appears to have been designed exclusively with the Game Boy Color in mind - while technically compatible with black-and-white Game Boy models, Jurassic Boy 2 runs at a much slower speed on these systems, and will not physically fit in the cartridge slot without modifications.


Physical scans

Famicom version

Famicom, TW
JurassicBoy2 FC TW Box Front.jpg

Game Boy Color version

Game Boy Color, TW
JurassicBoy2 GBC TW Box Back.jpgNospine.pngJurassicBoy2 GBC TW Box Front.jpg
JurassicBoy2 GBC TW Cart Back.jpgJurassicBoy2 GBC TW Cart.jpg
Game Boy Color, International?
JurassicBoy2 GBC Box Back Alt.jpgNospine-small.pngJurassicBoy2 GBC Box Front Alt.jpg
JurassicBoy2 GBC Cart Back Alt.jpgJurassicBoy2 GBC Cart Alt.jpg



Download Jurassic Boy 2
Multiple downloads available

NES Version (95 kB) (info)
GBC Version (99 kB) (info)

Technical information

ROM dump status

System Hash Size Build Date Source Comments
CRC32 491cd95e
MD5 05b390a30fd49df561e3973b9843523a
SHA-1 203523818a348361584cdebe47aeb860808757fc
384kB Cartridge (TW)
Nintendo Game Boy Color
CRC32 44827e74
MD5 073d9629a42758c2d772627d91483693
SHA-1 99bba44cd8ed5f4abc99ce81d97ee879d92069c1
2MB Cartridge (TW)


Unlicensed Sonic the Hedgehog games
Somari (1994) |
World Heroes 2 (1994) |
Game Boy Advance
Sonyc (1995) |
Sega Mega Drive
Sonic Jam 6 (1998) |
Nintendo Game Boy
Nintendo Game Boy Color
Sonic 3D Blast 5 (199x) |
Nintendo Game Boy Color
Chaoji Yinsu Xiaozi: Super Sonik II (200x) |
Game Boy Advance
Sonic 3 Fighter Sonic (200x)
Amstrad CPC
Ball Bearing (1993) |
Nintendo Game Boy Color
Jurassic Boy 2 (1994) | Sonic Dragon (1995)
Unlicensed Sonic the Hedgehog hacks of licensed games
Sonic |
Super Mario & Sonic 2 |
Super Nintendo Entertainment System
Sonic the Hedgehog (1996) |
Nintendo Game Boy
Sonic 6 (1998)